Cos

Returns the cosine of an angle in radians.

Module: Math

Signature

func Cos(x: float64) -> float64;
func Cos(x: float32) -> float32;

Parameters

Name	Type	Description
x	float64 / float32	An angle, in radians.

Returns

The cosine of x, in the range [-1, 1]. Cosine has no limit at infinity, so Cos(±Inf) is a NaN; a NaN argument also propagates.

Example

import Math::{ Cos, Pi };

let a = Cos(0.0); // 1.0
let b = Cos(Pi);  // -1.0

See also

• Math — the module overview
• Sin — sine
• Tan — tangent
• ArcCos — the inverse of Cos
• DegToRad — convert a degree value to radians first